I think the rack is the same, but the slower ratio comes from the longer steering arms in the spindle. Thankfully the parts are shared, hence discs etc are reasonably priced and many racing pads are available. Im glad all 931s have that setup over here the manual have always recommended different viscosities for different climates, most of those specs are outdated, no need run a 20w50, except if you don't want oil to be pumped around when your engine is cold. _________________´80 924 Turbo